getImportedKeys(String catalog, String schema, String table)
Syntax:
ResultSet getImportedKeys(String catalog,
                          String schema,
                          String table)
                          throws SQLException
                                        Description:
Retrieves a description of the primary key columns that are referenced by the given table's foreign key columns (the primary keys imported by a table). They are ordered by PKTABLE_CAT, PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
Each primary key column description has the following columns:
| PKTABLE_CAT | String | parent key table catalog (may be null) | 
| PKTABLE_SCHEM | String | parent key table schema (may be null) | 
| PKTABLE_NAME | String | parent key table name | 
| PKCOLUMN_NAME | String | parent key column name | 
| FKTABLE_CAT | String | foreign key table catalog (may be null) being exported (may be null) | 
| FKTABLE_SCHEM | String | foreign key table schema (may be null) being exported (may be null) | 
| FKTABLE_NAME | String | foreign key table name being exported | 
| FKCOLUMN_NAME | String | foreign key column name being exported | 
| KEY_SEQ | short | sequence number within foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key). | 
| UPDATE_RULE | short | What happens to foreign key when parent key is updated: 
 | 
| DELETE_RULE | short | What happens to the foreign key when parent key is deleted. 
 | 
| FK_NAME | String | foreign key name (may be null) | 
| PK_NAME | String | parent key name (may be null) | 
| DEFERABILITY | short | can the evaluation of foreign key constraints be deferred until commit 
 | 
Parameters:
catalog - a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; null means that the catalog name should not be used to narrow the search
schema - a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; null means that the schema name should not be used to narrow the search
table - a table name; must match the table name as it is stored in the database
Returns:
ResultSet - each row is a primary key column description
Throws:
SQLException - if a database access error occurs